Spark-arrester



(No Model.)

N. SHOPTAUGH.

SPARK ARRESTER. No. 282,933. Patented Aug. 7, 1883.

mine w p fni/ izfgr fzarj I am. Washvngwm u. c,

UNITED STATES NICHOLAS SHOPTAUGH, OF BOONEVILLE, INDIANA.

PATENT OFFICE,

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 282,933, dated August7, 1883.

Application filed June 30, 18L Renewed April 18, 1883. (No model.)

To all whom it may concern:

Be it known that I, NIoHoLAs SHOPTAUGH, a citizen of the United States,residing at Booneville, in the county of Warrick and State of Indiana,have invented certain new and use fulImprovements in Spark-Arresters;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it apertains to make and use the same, reference beinghadto the accompanying drawings, and to the letters or figures ofreference marked thereon, which form a part of this specification.

This invention relates to spark-arresters for the smoke-stacks oflocomotive and other engines; and it consists in certain improvements inthe construction of the same, as hereinafter shown and described.

In the accompanying drawings, Figure 1 is a side view of a smokestackprovided with the improved spark-arrester. Fig. 2 is a partly sectionalview of the same.

In smoke-stacks as commonly constructed, with the screen or wire-clothto retain the sparks placed at the top' of the stack, it has been foundthat the upward blast, driving the sparks and particles of coal againstthe screen, causes it to become stopped up, thus greatly impeding thepassage of air and smoke, and my invention is intended to overcome thisdifficulty.

A designates the main chimney, extending up to the top of the stack, andB the surrounding jacket, joining the chimney below, and 'a-rranged andconstructed with a few inches of space between the main casing of thejacket and that of the chimney within. 0 is the cap or cover of thestack, usually hinged thereto and'made to entirely close the stack atthe top.

The main stack or chimney A is provided with the side openings, a, forthe passage of smoke, sparks, and products of combustion. The jacket Bis also provided with openings having screens 12, forming thesp'ark-arrester, the screens being on about the same level or oppositethe openings a in the main stack A. Thus it will be seen that the directupward blast is broken, the top of the stack being closed, and the smokesparks, andpa-rticles pass out laterally from the stack A to the screensb,.which prevent the exit of the sparks and particles. As the force ofthe blast is somewhat modified in passing from the stack A, theparticles of coal are not driven against the screen so as to adhere tothem and obstruct the exit of smoke, but such particles fall downbetween the casings of A and B, and may be discharged from the stackthrough the spout c at the bottom of the jacket B.

I claim p A smoke-stack closed at the top and having the main chimney Aprovided with openings a, in combination with the jacket B, havingscreens 1), constructed and arranged substantially as set forth. I

I11 testimony whereof I affiX my signature in presence of two witnesses.

NICHOLAS SHOPTAUGH.

